/*
 * Copyright (c) 2010-2011 Josef Hardi <josef.hardi@gmail.com>
 * Copyright (c) 2010 Piotr Zagawa <piotr.zagawa@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package id.duapuluhdua.dakidaki.data.common;

import java.util.ArrayList;

import android.database.Cursor;

/**
 *
 */
public abstract class DataRowSet<T>
{
  /** Fields */
  private DataTable mTable;

  /**
   * Default constructor.
   *
   * @param table the data table.
   */
  public DataRowSet(DataTable table)
  {
    mTable = table;
  }

  public T getRecord(long rowId)
  {
    final Cursor cr = mTable.getDataRecord(rowId);
    if (cr != null) {
      final T item = getItem(cr);
      cr.close();
      return item;
    }
    return null;
  }

  public ArrayList<T> getRecords()
  {
    return getRecords(null, null);
  }

  public ArrayList<T> getRecords(String where)
  {
    return getRecords(where, null);
  }

  public ArrayList<T> getRecords(String where, String orderBy)
  {
    final Cursor cr = mTable.getDataRecords(where, orderBy);
    if (cr != null) {
      final ArrayList<T> items = new ArrayList<T>();
      while (!cr.isAfterLast()) {
          items.add(getItem(cr));
          cr.moveToNext();
      }
      cr.close();
      return items;
    }
    return null;
  }

  protected abstract T getItem(final Cursor cr);
}
